Principal Applied Scientist, Prime Video Personalization & Discovery

## Responsibilities - Invent, prototype, and productionize large-scale AI solutions across Prime Video’s personalization and discovery ecosystem using deep learning, generative AI, reinforcement learning, and optimization techniques; - Provide technical leadership and influence product vision by collaborating closely with engineers, product managers, and senior stakeholders; - Design and lead high-impact A/B tests and data analyses to validate hypotheses and guide product direction; - Drive technical bar-raising across science and engineering teams through mentorship, design reviews, and collaboration; - Stay ahead of industry trends and emerging research; leverage them to evolve long-term strategy and architecture; - Publish impactful research internally and externally (e.g. top-tier conferences and journals). ## Requirements - PhD (or Master’s with 10+ years of applied experience) in machine learning, computer science, statistics, or a related field - 8+ years experience designing, building, and deploying ML models for real-world business applications at scale - Proven leadership in driving cross-functional ML/AI initiatives from ideation through production - Proficiency in Python, Java, or C++, and experience with ML frameworks (e.g. TensorFlow, PyTorch) - Deep expertise in recommendation systems, search relevance, or large-scale personalization systems ## Nice to Have - Strong publication record in top-tier conferences (e.g. NeurIPS, ICML, KDD, RecSys, SIGIR) - Experience with large-scale distributed systems (e.g. Hadoop, Spark) - Demonstrated ability to influence technical roadmaps and mentor other scientists and engineers - Experience defining and delivering strategic AI vision for consumer-facing products ## Benefits - Base salary range: $228,700.00 - $309,400.00 USD annually - Sign-on payments and restricted stock units (RSUs) - Comprehensive benefits including health insurance, 401(k) matching, paid time off, and parental leave - Inclusive culture and commitment to diversity and inclusion - Opportunities for professional growth and impact at a global scale Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status. Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees, supervisors, and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees, supervisors, and staff to ensure exceptional customer service; and follow all federal, state, and local laws and Company policies. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness and professionalism, and safeguard business operations and the Company’s reputation. Pursuant to the Los Angeles County Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.